function apc = APC_CORR(sv)
% SV antenna phase center offset.

% igs05.atx
% apc = [700 614 2619 2279 700 2676 700 2405 2340 2389,...
%        971 700 1203 1178 700 1307 645 1133 668 1154,...
%        1300 792 602 2455 1407 2307 2472 911 700 2466,...
%        750 2575]*1e-3;

% igs08.atx
apc = [1650 778.6 2792.6 2420 882.6 2878.6 852.9 2578.1 2461.4 2546.5,...
       1141.3 840.8 1389.5 1345.4 681.1 1506.4 827.1 1290.9 849.6 1343.6,...
       1405.4 905.8 808.2 2603.8 1663.2 2459.4 2633.4 1042.8 857.1 2612.7,...
       971.4 2777.2]*1e-3;
   
apc = apc(sv);